I would most probably use 'on sunday' or 'this sunday' to refer to sunday the 7th, but i might use 'next sunday'. Besides, if you say you do something on sunday (s), monday (s), etc , it also conveys the sense that you do it on every sunday, monday, etc So you can also say It's something i do on sunday or sundays instead of it's something i do every sunday that is more clear and emphatic. 1 sunday is understood to be a particular place in the week or in calendar time, hence on
Sunday evening and sunday can both be fluid in their meaning, referring to either a duration of time We waited for your call all sunday evening We waited for your call all evening, sunday We waited for your call all day, sunday. 1 if today is sunday (or any day) and you say, this sunday it means this coming sunday. that is what this sunday is short for If you say, next sunday it is referring to the following after a previously stated sunday, or the following sunday after this sunday with the understanding that person you are talking to knows what this sunday.
It sounds a bit stilted and overly formal for conversation and is more appropriate for writing When you say monday through friday, i expect to hear something about saturday and/or sunday Mondays through fridays, we are open 9 am to 7 pm Saturdays and sundays, we are open 10 am to 5 pm. Jesse takes the train in the morning on sunday Or jesse takes the train in the morning of sunday
It looks to me that both are correct If yes, do they have different connotations? Either they are currently free, or they are not will you be free on sunday is asking if they anticipate being free on that day, which is slightly different Test yourself with our free english language exercise about 'days of the week' This is a free beginner/elementary english grammar quiz and interractive grammar exercises
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